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McC TAKS Objective 4
McC TAKSObjective 4
Question | Answer |
---|---|
energy | the ability to do work |
work | the product of force and the distance over which it moves |
motion | a constant change in the location of a body |
speed | Distance traveled divided by the time needed to travel that distance |
wave | a disturbance that moves through a medium |
wavelength | The length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next |
amplitude | the maximum height of the wave crest above the rest position or the maximum depth of the wave trough below the rest position |
frequency | the number of waves that pass a single point in a given amount of time |
kinetic energy | Energy of motion |
potential energy | Stored energy |
weight | the force of gravity acting on a mass |
force | A push or a pull; has a size and direction |
friction | Any force that resists motion |
unbalanced force | Unequal forces acting on an object – results in a change in the object’s motion in the direction of the larger force |
balanced force | Describes forces that are equal but opposite in directions; cancel each other out and no change in motion occurs |
acceleration | Change in velocity divided by the amount of time needed for that change to take place; speeds up, slows down or changes direction |
thermal energy | The total energy of all the particles in a sample of matter |
chemical energy | Energy produced by a chemical reaction or chemical change |
mechanical energy | the energy which is possessed by an object due to its motion or due to its position; either kinetic or potential energy |
electrical energy | Energy of electric charges or electric current |
pulley | a simple machine that can change the direction of force |
lever | a simple machine made with a bar free to move about a fixed point called a fulcrum |
velocity | speed and direction of a moving body; average velocity can be calculated by dividing displacement by time |
distance | the entire path an object travels |
gravity | force of attraction between all objects in the universe |
inertia | an object's tendancy to remain at rest or keep moving with constant velocity |
Newton's Laws | laws of motion first stated by Isaac Newton |